Removed unnecessary require.
Removed blank line.
Include `puppet` gem in Gemfile.
Include `puppetlabs_spec_helper` gem in Gemfile.
Include `puppetlabs_spec_helper` rake tasks.
Don't test on `ruby-head`.
Don't allow failures on `ruby` v2.0.0.
Add `puppet-blacksmith` rake tasks.
Include `rspec-puppet` gem.
Add a `validate` task for `rake`.
Include validation in default rake task.
Execute the default `rake` task in Travis.